FAN6921BMRMY

Overview

The FAN6921BMRMY is an integrated Critical Mode Power Factor Correction (PFC) and Quasi-Resonant Current Mode PWM controller manufactured by onsemi. It combines a PFC controller with a high-voltage startup circuit, eliminating the need for external bias winding. The device operates in critical conduction mode to minimize switching losses and includes features such as cycle-by-cycle current limiting, soft-start, and brown-out protection. It is housed in a 16-pin SOP package.

Feature Summary

• Integrated Critical Mode PFC and Quasi-Resonant Current Mode PWM Controller
• High-Voltage Startup Circuit Eliminates External Bias Winding
• Critical Conduction Mode Operation for Reduced Switching Losses

Applications

• Adapters
• LCD/LED TV monitors
• Set-top boxes
• External battery chargers

Procurement Notes

Verify the specific suffix 'BMRMY' against official onsemi documentation to confirm package type and tape/reel specifications. Ensure compliance with RoHS directives and check for any lifecycle status changes, such as Not Recommended for New Designs (NRND), prior to procurement.

Selection Notes

Select this component for designs requiring high efficiency in low-to-medium power applications. The integration of PFC and PWM functions reduces component count. Verify that the input voltage range and output power requirements align with the controller's capabilities before finalizing the design.

Part Context

This part belongs to the FAN6921 series of integrated controllers designed for energy-efficient power supplies. It represents a solution for simplifying AC-DC converter designs by combining two control functions into a single IC, reducing board space and assembly complexity compared to discrete solutions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.